/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.tools.adtui.model

/**
 * An interface that provides data to all RangedSeries used by the UI.
 */
interface DataSeries<E> {
  fun getDataForRange(range: Range): List<SeriesData<E>>

  companion object {
    fun <T> using(factory: (Range)->List<SeriesData<T>>) = object : DataSeries<T> {
      override fun getDataForRange(range: Range): List<SeriesData<T>> {
        return factory(range)
      }
    }

    fun <T> empty(): DataSeries<T> = object : DataSeries<T> {
      override fun getDataForRange(range: Range): List<SeriesData<T>> {
        return emptyList()
      }
    }
  }
}